I had a tank with 2 american puffers, 2 red eye red tailed puffers, 4 tiger barbs and 2 flying foxes. Just the other day i introduced a dragon puffer to the tank and he has killed both south american puffers i am not thinking of rehoming all my fish apart from the dragon puffer as i think he is really kool even though he kille dmy two babies i wanted to make my tank pretty plain.. like white sand, a log. and about 2 plants. the tank i have is 100 litres n i wanted to know if i could house another dragon puffer with him as the shop had two and the puffers got on well. if i do set a tank just for dragon puffers is there anything else i could put with them? thank you